Basic operations and concepts - math word problems - page 164 of 323
Number of problems found: 6446
- Radiation shield
Determine what thickness of the shielding material will be required if we reduce the radiation to 3% of the original value if we know that a thickness of 6 mm will reduce the level of the same radiation by 9%. Round up to the whole value in millimeters (t - Orchard tree rows
There are 390 trees arranged in rows in the orchard. How many rows are there if each row has the same number of trees greater than 30 and less than 40? - What is 20
What is the least number that should be added to 2497 so that the sum of the digits is divisible by 5, 6, and 10? - Shopping mall
A new shopping mall records 120 total shoppers on their first day of business. Each day after that, the number of shoppers is 10 percent more than the day before. What is the total number of shoppers that visited the mall in the first seven days? Round yo - 600 pencils
Six hundred pencils we want to be divided into three groups. The biggest groups have ten pens more than the smallest. How many ways can this be done? - Progression
-12, 60, -300,1500 need the next 2 numbers of pattern - Radio price
After technical improvements, the radio receiver, whose price was 220 €, was auctioned for 20%. He was later reduced by 15% of the new price. What was its final price? - Series
Ondrej wrote this series of numbers: 1,3,7,15, .... n. Which number from the set 2047, 1021, 511, 255, 63 does not belong to his series? - Louvers
The company charges for office equipment louvers total 287 Eur. From the delivery, the bill is obvious that the louvers are 63 Eur more expensive than their installation. What percentage of the total charged is the installation of louvers? - Golden ratio
Divide the line of length 871 cm into two sections so that the ratio of shorter to greater is the same as the ratio of the greater section to the whole length of the line. - Unknown number
16% of the unknown number equals the square root of the number 25. Find this unknown number. - Mathematics letter puzzle
Solving the problem of substituting letters with numbers in the word MATHEMATICS: MAT + EMA = TIK - Bank deposit interest
Entrepreneur Zahourek deposited 450,000 into the bank's account with 4.5% annual interest. Calculate the amount on the deposit account after three years. - Scooter income
How many electronic scooters should the manufacturer sell to maximize their income if the income function is given by the equation TR (Q) = -4Q2 + 1280 Q + 350? - Children at pond
There were more than 40 and less than 80 children by the pond. A fifth of the children took a bath, and a seventh sunbathed. How many children were at the pond? - Animals count
Horses, sheep, and ducks graze in the meadow. Sheep are more than ducks. Sheep and ducks have a total of 100 heads and legs. Ducks and sheep are three times more than horses. How many horses are there? - Beekeeper 2
The beekeeper has more than 190 kilos of honey and less than 200 kilos. If he divides it into 8-kilogram bottles, he rest 3 kilos. If he divides it into 7-kilogram bottles, he he rest kilos. How many kilos of honey does he have? - Workers 4
Workers in a workshop machined the same parts for three months. Their output increased so that each subsequent month they machined 10 percent more parts than the previous month. In the last month, they machined 484 parts. How many parts did they machine i - Geometric sequence terms
The two terms of the geometric sequence are a2=12 and a5=three halves. a) calculate the tenth term of the sequence. b) calculate the sum of the first 8 terms of the sequence. v) how many first terms of the sequence need to be added so that the sum is equa - Number factor product
The product of two numbers we know. If we increase the first factor by 2 and decrease the second factor by two, the product increases by 4. How much does the product change if we decrease the first factor by 3 and increase the second factor by 3?
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